Type-writer.



PATENTED FEB. '7, 1905.

L. DOEDERLEIN.

TYPE WRITER.

APPLICATION FILED JULY 1, 1903.

3 SHEETS-SHEET 1.

Qua Lewes No. 782,111. PATENTED FEB. '7, 1905. L. DOEDBRLEIN.

TYPE WRITER.

APPLICATION FILED JULY 1, 1903.

3 SHEETS-SHEET 2.

Flnveni'oz PATENTED FEB. 7, 1905.

L. DOBDERLEIN.

TYPE WRITER.

AIPLIOATION FILED JULY 1, 1903.

3 SHEETS-SHEET 3.

5]: manl'oz UNITED STATES LUDIVIG DOEDERLEIN, OF CINCINNATI, OHIO, ASSIGNOR, BY DIRECT AND MICSNE ASSIGNMENTS, TO TYPEWRIIER IMPROVEMENT COMPANY, OF

Patented February '7, 1905.

PATENT OFFICE.

STA UNTON, VIRGINIA, A OOPA RTNERSH I P.

TYPE-WRITER.

SPECIFICATION forming part of Letters Patent No. 782,111, dated February 7, 1905.

Application filed July 1, 1903. Serial No. 163,922.

To r117 111710111 it 'Hl/(l Z/ cmwer/t:

Be it known that I, LUnwIG DOEDERLEIN, a resident of Cincinnati. Ohio, have invented a new and useful Improvement in Ty periters, I

which invention is fully set forth in the following specification.

This invention relates to type-writers, and more particularly to line-spacing mechanism therefor.

The object of the invention is to provide means whereby the platen will be automatically shifted upon the return of the carriage to its normal position and also to provide mechanism controlled from a key on the fingerboard whereby the platen maybe shifted without returning the carriage to its normal posi tion.

With these objects in view the invention consists in a type-writerof any usual construction provided with a reciprocating carriage and key-levers which operate to actuate the type and at the same time operate the escapement whereby the carriage is fed with a step-by-step movement in ways well known in the art. Said carriage is provided with mechanism operated at the termination of the return movement of the carriage to actuate a pawl-lever engaging the usual ratchet upon the platen to revolve it.

Furthermore, the invention consists of a key-lever extending to the keyboard and having operative connections with the lever controlling the pawl for actuating the ratchet on the platen, to the end that the platen may be shifted from the keyboard without regard to the position of the carriage.

As herein shown, theinvention is associated with an automatic carriage-return device controlled by a lever from the keyboard, whereby the carriage may be automatically returned to its normal or extreme right-hand position and the line-spacing mechanism automatically operated by simply touching the key of the carriage-return lever on the keyboard.

The inventive idea may receive various mechanical expressions, one of which is illustrated in the accompanying drawings, in which Figure I is a rear elevation.

Fig. 2 is a right-hand end elevation. Fig. 3 is a detail perspective of the line-spacing device; and Fig. a is a part-sectional view taken on the line 4: at, Fig. 3, looking to the left. Fig. 5 shows certain details in perspective.

Referring to the drawings, on any suitable framework I is mounted a bail-piece 2, pivoted in the rear part of the frame, which bail-piece is depressed by the action of the key-levers 3 in striking any given key.

I is a lever pivoted at 5 to the framework of the machine, which lever has one of its arms connected to the bail-piece 2 by any suitable connecting device, here shown as a yoke 6 and the swivel-link 7. The opposite end of the lover carries a pawl S, engaging a ratchet-wheel 9 on the shaft IO, having bearings in the framework of the machine. The ratchet-wheel 9 and the pinion II are keyed to such shaft, and the pinion engages a gearwheel 12 upon spring-drum IT, to which drum is connected a pulley 15, over which extends a suitable cable 16. having one end secured to the periphery of the pulley and the other end secured at IT to the carriage of the machine. In addition to the actuating-pawl S a retaining-pawl I8 is pivoted in such position as to engage the ratchet-teeth on the ratchet-wheel 9 and retain it while the pawl 8 is in the act of moving for reengagement with the ratchetwheel. The lever I has a spring I9, normally operating to hold the end of the lover supporting the pawl b depressed.

The operation of the mechanism thus far described will be readily understood. \Vhen the lever 3 is depressed from the keyboard, it operates to depress one end of the lever& and elevate the opposite end bearing the pawl, which thus turns the ratchet wheel and (through the intermediate clockwork-gearing) winds the spring in the spring-drum It and at the same time operates to unwind the cable 16 over the pulley a suflicientdistance to permit the carriage to be advanced from the right to the left by the ordinary carriage-advancing spring 20.

Pivoted upon the framework of the machine at 21" is a lever 21, one of whose arms extends forward to the keyboard and carries a key 22, while the rear end of the said lever I resting in the fork of the bar 37 and upon an extends under the tails of the pawls 8 and 18, so that when the key 22 is depressed the rear end of the lever is elevated and operates to trip the two pawls 8 and 18 and free the spring in the spring-barrel 14, whereupon it reacts to wind the cable 16 upon the pulley and withdraw the carriage from left to right, this operation being secured by virtue of the fact that the spring in the spring-drum 14 is strong enough to overcome and rewind the ordinary carriage-actuating spring 20. It is, however, frequently desirable in the operation of the machine to shift the carriage in either direction without returning to its extreme right-hand position, and in the act of doing this the operator elevates the rack-bar 27 of the machine, so as to enable the carriage to be shifted from left to right or right to left, as may be desired. In order that this movement may be accomplished, means are provided in the present invention whereby the pawls 8 and 18 shall be tripped and freed from engagement with the ratchet-wheel 9 whenever the rack-bar is thus elevated by the operator. For this purpose the bell-crank lever 24 is pivoted to the frame at 25 and has one arm pivotally connected to a slide 26, which extends upward and is provided with a lip 26, Fig. 3, overhanging the top of the rack-bar. The other arm of the bell-crank lever 24 is connected by a rod 28 to a crankarm 29 on a shaft 30, which shaft also carries a wheel 31, having a projecting pin 32 lying normally under the tails of the pawls 8 and 18. Upon elevating the rack-bar 27 the connecting parts are operated to cause the pin 32 to engage pawls 8 and 18 and free them from the ratchet-wheel 9.

The lever 21 is normally held in its elevated position by a spring 21, and to insure that the lever shall remain depressed and the pawls 8 and 18 disengaged from the ratchet-wheel 9 until the carriage has fully returned to its right-hand position anysuitable catch 23 may be employed for engaging and retaining the rear end of the lever elevated until the terminal movement of the carriage to the right, when said catch may be automatically tripped through the medium of a trip-rod 23;

For the purpose of rotating the platen to secure the proper line-spacing a lever 34, Figs. 3, 4, and 5, is pivoted upon the carriage at 33 and bears at one end a pawl 35, engaging the ratchet-wheel 36 upon the platen, so that the oscillations of the lever 34 may cause the pawl 35 to engage the ratchet, and thereby turn the platen with astep-by-step movement. The lever 34 may be caused to oscillate in any suitable manner. The mechanism here shown for that purpose consists of a forked bar 37, pivotally connected to link 37, whose other end is pivoted to the carriage at 37', so that the bar 37 is free to move up and down vertically on the carriage, with the rear end of the lever 34 antifriction-roller 38, carried by said bar. On the link 37 is a cam finger-piece 39, pivoted thereto with a knuckle-joint, and upon a stationary part of the machine is located an abutment 40, preferably in the form of an antifriction-roller and in the path of the cam 39 as the carriage moves from left to right. Preferably this abutment 40 is supported on the usual carriage-return stop 40, so that it is always in position to actuate the platen-turning lever 34 just before the termination of the return movement of the carriage.

The action of the mechanism thus far described is as follows: Just before the carriage finishes its movement from left to right the cam 39 strikes the abutment 40, thereby causing the forked bar 37 to be elevated, carrying with it the rear end of the lever 34 and depressing the opposite end of the lever which carries the pawl 35 and causing the latter to turn the platen. It will be observed that this action is entirely automatic and takes place whether the carriage is returned by means of the automatic return devices hereinbefore described or whether it is returned by the hand of the operator.

In the mechanism, however, as thus far described the platen would only be actuated upon the full throw of the carriage from left to right, and as it is frequently desirable to shift the platen without making this return movement of the carriage means are provided whereby the operator may readily rotate the platen by touching a key-lever at the keyboard without regard to the position at that time occupied by the carriage.

Referring to Fig. 3, 41 is a lever pivoted at 42 to any suitable part of the framework of the machine and having its forward end extending to the keyboard, while its rear arm is connected by a link 43 to one arm of a bellcrank lever 44, pivoted at 45 to the framework and pivotally connected to a lever 46, moving in a substantially horizontal plane around the fulcrum 47. The forward end of the lever 46 has an arm 48 pivoted thereto, which arm extends under a swinging bar or blade 49, pivotally mounted in bearings 50 on the carriage, said arm 48 having an upwardlyprojecting part bearing an antifriction-roller 51 in front of the swinging bar 49. Rigidly secured to the bar 49, and preferably integral therewith, is a forwardly-extending arm or lever 52, having a laterally-extending pin 53, bearing upon the forward arm of lever 54, fulcrumed at 55 on the carriage. The lever 54 has on its rear arm a laterally-extending pin 56, (see Fig. 5,) which normally rests under the rearwardly-extending arm of the pawl-lever 34. As the carriage reciprocates back and forth the plate 49 is moved past the antifrictionroller 51, with the latter always in front of the plate, and by depressing the front end of the lever 41 the operator will actuate the connecting-lever mechanism so as to produce a rearward pull upon the link as and cause the plate i to so vibrate upon its bearings as to depress the lever 52, and with it the forward end of the lever 51, thereby elevating the rearendof the lever 31, and this engages and operates the pawl-lever 31. It will therefore be seen that in any position which the carriage may occupy on themachine the operator may readily rotate the platen by simply touching the key connected to the key-lever 41.

In order that the platen may be free to be shifted by hand either backward or forward, as may be necessary, means are provided for automatically withdrawing the pawl 35 from engagement with the ratchet 36, except when the same is in the immediate act of rotating the platen.

Referring to Figs. 3, a, and 5, 57 is a lever pivoted on the same fulcrum as the pawllever 31. This lever57 is provided with a camface 38. lying in front of a pin 59 on the'pawllever, the portions of the cam beingsuch that any upward movementof the pawl with relation to the camsurface 58 will result in swinging the pawl rearwardly. The rear end of the pawl-lever 3i is normally held depressed by the action of a spring 60, bearing thereon, which serves to elevate the forward or pawlbearing end of the lever, while the cam-lever 57 is also elevated by means of a flat spring 61 imderlying the lever, the spring 60, however, being stronger than the spring 61. As shown in Fig. I, the forked bar 3Tis elevated and the pawl 35 has just reached the limit of its downward stroke. Upon the forked bar 37 being lowered the spring 60 will act to elevate the pawl 35, and the pin 59 thereon, engaging the cam 5h on the lever 57, will act to swing the pawl rearward and out of engagement with the teeth of the ratchet 36, the lever 57 being preyented from moving upward with the pawllever :31 by reason of a stop-pin 62 projecting through an opening in a part of the framework above the two levers 3% and 57, so that the upward movement of 57 is stopped before that of the lever 31, the relative movement of the two levers securing the travel of the pin 59 along the cam For the purpose of adjusting the pawl-lever so as to cause the pawl to engage every tooth or every other tooth, as may be desired for either single or doubleline spacing, means are provided whereby the stop-pin 62 may be adjusted into a higher or lower position. For this purpose the stop-pin is mounted upon a pivoted arm 63 and is normally provided with a spring 6% for holding it pressed inward and a button 65, which may be rasped for the purpose of withdrawing the pin in the act of adjustment. As shown in Fig. 3. the stop-pin is in the lower one of the holes in the frame, and the pawl would act to shift the platen for single spacing. By shifting the pin to the opening 66, however, the

tively engaged by shifting means actuated by the key-lever will be within the spirit of the invention, provided said swinging bar. operates to actuate the pawl-lever for shifting the platen.

For the purpose of operating the pawl-lever 3& to manually rotate the platen without actuating the key-lever 11 or moving the carriagereturn mechanism a linger rest or thumb-piece 67 may be and preferably is secured to the forward end of said pawl-lever 3%, to be pressed by the linger of the operator to effect the desired result. (See Figs. Iand While I have herein shown and described the automatic carriage-return mechanism and have claimed thesaine broadly in combi nation with the lii'ie-spacing devices, I have not claimed the same specifically herein, as it will form the subject-matter of a separate application, Serial No. 165, 161), liled July 11, 1903.

I claim 1. In a type-writer, the combination ofa reciprocating carriage bearing a platen, platenrotatingdevices mounted on the carriage, a pivoted blade carrying an arm located on the carriage and operatively connected to said devices, and a key-lever fulcrumcd on a stationary part of the machine and operatively connected to said pivoted member.

In a type-writer, the combination of a reciprocating carriagebearing a platen provided with a ratchet-wheel, a pawl-lever pivoted on the carriage and bearing a pawl for engaging said ratchet, a pivoted blade on the carriage, a key-lever operable from the keyboard for operating the blade, and operative connections between said blade and pawl-lever.

.In a type-writer, the combination of a reciprocating carriage bearing a platen having a ratchet thereon, a lever fulcrumed on the carriage and having a pawl engaging said ratchet, a reciprocating elementengaging said said ratchet-wheel, a projection on said pawl,

from the keyboard for operating the blade, and operative connections between said blade and pawl-lever.

5. In a type-writer, the combination of a reci procating carriage bearing a platen provided with a ratchet-wheel, a pawl-lever pivoted on the carriage and bearing a pawl for engaging said ratchet, a pivoted blade on the carriage provided with an arm, connecting means between said arm and lever for reciprocating the latter, and a key-lever operable from the keyboard for operating the blade.

6. In a type-writer, thecombination of a reciprocating carriage, and automatic carriagereturn mechanism, with a revoluble platen having a ratchet-wheel, a lever carrying a pawl engaging said ratchet-wheel to turn the platen, automatic devices operating said lever, a projection on said pawl, a lever engaging said projection and operated by said first lever whereby the pawl is disengaged after each throw of said lever.

7. In a type-writer, the combination of a reciprocating carriage and automatic carriagereturn mechanism, with a rotatable platen having a ratchet-wheel, a lever fulcrumed on the carriage and carrying a pawl engaging means engaging said projection and operated by said lever for disengaging said pawl after each throw of the lever, a reciprocating member carried on the carriage and engaging said lever, and means reciprocating said member upon the return of the carriage.

8. In a typewriter, a carriage, a revoluble platen thereon, a vibratory lever, connections between the lever and platen whereby the vibrations of the former turn the latter, automatic means on said lever for disengaging said connections, an oscillating plate or bar on the carriage, operative connections between said bar and lever, and means operable from the keyboard and engaging said plate or bar to oscillate it.

9. In a type-writer, the combination of a reciprocating carriage, a rotatable platen thereon, a swinging blade or bar extending longitudinally of the carriage and provided with an extending arm, a lever having a part in position to engage and swing said blade or bar, a key on the keyboard operatively connected to said lever, and platen-rotating mechanism oppawl for engaging the ratchet, a pivoted blade on the carriage, operative connections between said blade and lever, an antifriction-roller and a key-lever for operating the same, whereby said blade may be oscillated in any position of the carriage.

11. In a type-writer, the combination of a reciprocating carriage bearing a platen provided with a ratchet-wheel, a lever pivoted on the carriage and bearing a pawl, an adjustable stop for said lever, means for normally holding said lever against said stop, a second lever adapted to be actuated by the first lever and provided with a cam-face for engaging said pawl whereby the pawl is disengaged from the ratchet-wheel after each throw of the said first lever.

12. In a type-writer, the combination of a revoluble platen having a ratchet-wheel, a lever carrying a pawl, a second lever actuated by the first and provided with means for engaging said pawl whereby the said pawl is disengagedfrom the ratchet-wheel after each throw of the lever, adjustable means for stopping said levers successively and a spring for holding said levers normally against said stopping means.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

LUDVVIG DOEDERLEIN.

\Vitnesses:

DUVALL D. ROBINSON, CHAS. BROADWELL. 

